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1. 发明专利

JP2008179633A Method for crystallization for producing bisphenol 审中-公开
标题翻译：用于生产双酚的结晶方法
公开(公告)号：JP2008179633A
公开(公告)日：2008-08-07
申请号：JP2008001117
申请日：2008-01-08
申请人： Bayer Materialscience Ag , バイエル・マテリアルサイエンス・アクチェンゲゼルシャフトBayer MaterialScience AG
发明人： MUENNICH CHRISTIAN , BLASCHKE ULRICH , EEK ROB , PREIN MICHAEL , AUDENAERT RAYMOND , TYTGAT GERT
IPC分类号： C07C29/78 , C07C39/16
CPC分类号： C07C37/20 , C07C37/84 , C07C39/16
摘要： PROBLEM TO BE SOLVED: To provide a method for producing a bisphenol having >99.7% purity. SOLUTION: The method for producing a bisphenol having >99.7% purity comprises (a) reacting phenol with acetone in the presence of an acidic catalyst to form a bisphenol-containing product mixture, (b) taking out at least a portion of the bisphenol from the product mixture in a form of a bisphenol/phenol adduct by crystallization, filtration and washing, to provide bisphenol/phenol adduct crystals, and (c) removing at least a portion of the phenol from the bisphenol/phenol adduct crystals to provide the bisphenol having high purity of >99.7%, wherein the crystallization comprises continuous suspension crystallization and is carried out in at least three crystallization devices constituted so that the product mixture is first cooled in a first stage of crystallization to a temperature of 50-70°C in a first crystallization device and a second crystallization device connected in parallel, and subsequently cooled in a second stage of the crystallization to a temperature of 40-50°C in a third crystallization device connected downstream in series to the first and second crystallization devices, and wherein a total residence time of the product mixture in the crystallization is >4 hr. COPYRIGHT: (C)2008,JPO&INPIT
摘要翻译：待解决的问题：提供一种生产纯度> 99.7％的双酚的方法。解决方案：制备纯度> 99.7％的双酚的方法包括（a）在酸性催化剂存在下使苯酚与丙酮反应以形成含双酚的产物混合物，（b）取出至少一部分通过结晶，过滤和洗涤从双酚/苯酚加合物形式的产物混合物中提供双酚/酚加合物晶体，和（c）从双酚/苯酚加合物晶体中除去至少一部分苯酚至提供高纯度> 99.7％的双酚，其中结晶包括连续悬浮液结晶，并且在至少三个结晶装置中进行，所述结晶装置构成使得产物混合物首先在结晶的第一阶段被冷却至50-70℃ ℃的第一结晶装置和第二结晶装置并联连接，随后在第二结晶阶段中在40-50℃的温度下在第三结晶装置与第一和第二结晶装置串联连接下游，并且其中产物混合物在结晶中的总停留时间> 4小时。版权所有（C）2008，JPO＆INPIT

2. 发明专利

ES2367129T3 PROCEDIMIENTO DE CRISTALIZACION PARA LA PREPARACION DE BISFENOL A. 未知
公开(公告)号：ES2367129T3
公开(公告)日：2011-10-28
申请号：ES08000201
申请日：2008-01-08
申请人： BAYER MATERIALSCIENCE AG
发明人： MUENNICH CHRISTIAN , BLASCHKE ULRICH , EEK ROB , PREIN MICHAEL , AUDENAERT RAYMOND , TYTGAT GERT
IPC分类号： C07C37/20 , C07C37/84
摘要： Procedimiento para la preparación de bisfenol A con una pureza de más del 99,7 % en el que a) se hacen reaccionar fenol y acetona en presencia de un catalizador ácido dando una mezcla de productos que contiene bisfenol A y a continuación b) de esta mezcla de productos que contiene bisfenol A se separa un aducto de bisfenol A-fenol mediante cristalización y posterior filtración y lavado, c) el fenol se separa completa o parcialmente de los cristales del aducto de BPA-fenol así obtenidos en el que la cristalización en la etapa b) se realiza en forma de una cristalización en suspensión continua y a este respecto se usan por lo menos tres dispositivos de cristalización que contienen un recipiente de cristalización, un intercambiador de calor y una bomba de circulación que están conectados de forma que la mezcla de productos se enfría inicialmente en dos dispositivos de cristalización conectados en paralelo a una temperatura entre 50 y 70 ºC y a continuación en un tercer dispositivo de cristalización que está conectado detrás en serie a los dos primeros dispositivos de cristalización a una temperatura entre 40 y 50 ºC, en el que el tiempo de permanencia total de la mezcla de productos en la cristalización considerando todos los dispositivos de cristalización asciende a más de 4 h.

3. 发明专利

SG144818A1 CRYSTALLIZATION PROCESSES FOR PRODUCING BISPHENOLS 未知
公开(公告)号：SG144818A1
公开(公告)日：2008-08-28
申请号：SG2008001109
申请日：2008-01-02
申请人： BAYER MATERIALSCIENCE AG
发明人： MUENNICH CHRISTIAN DR , BLASCHKE ULRICH DR , EEK ROB DR , PREIN MICHAEL DR , AUDENAERT RAYMOND , TYTGAT GERT
摘要： Crystallization Processes for Producing Bisphenols Processes for producing bisphenols (e.g., bisphenol A (BPA)) having a purity greater than 99.7 % are described, such processes including reacting a phenol and acetone in the presence of an acidic catalyst to form a product mixture comprising a bisphenol; removing at least a portion of the bisphenol from the product mixture in the form of a bisphenol/phenol adduct by crystallization, filtration and washing to provide bisphenol/phenol adduct crystals; and removing at least a portion of the phenol from the bisphenol/phenol adduct crystals to provide the bisphenol having a purity of more than 99.7 %; wherein the crystallization comprises continuous suspension crystallization and is carried out in at least three crystallization devices arranged such that the product mixture is first cooled in a first stage of the crystallization to a temperature of 50 to 70 degree C in a first crystallization device and a second crystallization device connected in parallel, and subsequently cooled in a second stage of the crystallization to a temperature of 40 to 50 degree C in a third crystallization device connected downstream in series to the first and second crystallization devices, and wherein a total dwell time of the product mixture in the crystallization is more than 4 hours.

4. 发明专利

AT514668T 未知
公开(公告)号：AT514668T
公开(公告)日：2011-07-15
申请号：AT08000201
申请日：2008-01-08
申请人： BAYER MATERIALSCIENCE AG
发明人： MUENNICH CHRISTIAN , BLASCHKE ULRICH , EEK ROB , PREIN MICHAEL , AUDENAERT RAYMOND , TYTGAT GERT
IPC分类号： C07C37/20 , C07C37/84
摘要： A method for making Bisphenol A (BPA) with a purity of more than 99.7% by (a) reacting phenol and acetone using an acid catalyst, (b) separating a BPA-phenol adduct by crystallisation and (c) removing phenol from the adduct, in which (b) involves continuous suspension crystallisation with a total dwell time of more than 4 hours in at least 3 crystallisers, by cooling first to 50-70[deg] C in two parallel crystallisers and then to 40-50[deg] C in a third crystalliser connected in series with the first two. A method for the production of Bisphenol A (BPA) with a purity of more than 99.7%, by (a) reacting phenol with acetone in presence of an acid catalyst, (b) separating a BPA-phenol adduct from the product mixture by crystallisation, filtration and washing, and (c) removing the phenol from the adduct, in which stage (b) involves continuous suspension crystallisation in at least three crystallisers connected in such a way that the mixture is first cooled to 50-70[deg] C in two crystallisers in parallel and then cooled to 40-50[deg] C in a third crystalliser in series with the first two, the total residence time of the mixture over all crystallisers being more than 4 hours.

5. 发明专利

DE102007001427A1 Making high-purity Bisphenol A from phenol and acetone, e.g. for polycarbonate production, involves separating the Bisphenol A-phenol adduct by continuous suspension crystallisation 未知
公开(公告)号：DE102007001427A1
公开(公告)日：2008-07-10
申请号：DE102007001427
申请日：2007-01-09
申请人： BAYER MATERIALSCIENCE AG
发明人： MUENNICH CHRISTIAN , BLASCHKE ULRICH , EEK ROB , PREIN MICHAEL , AUDENAERT RAYMOND , TYTGAT GERT
IPC分类号： C07C37/20 , C07C37/84 , C07C39/16
摘要： A method for making Bisphenol A (BPA) with a purity of more than 99.7% by (a) reacting phenol and acetone using an acid catalyst, (b) separating a BPA-phenol adduct by crystallisation and (c) removing phenol from the adduct, in which (b) involves continuous suspension crystallisation with a total dwell time of more than 4 hours in at least 3 crystallisers, by cooling first to 50-70[deg] C in two parallel crystallisers and then to 40-50[deg] C in a third crystalliser connected in series with the first two. A method for the production of Bisphenol A (BPA) with a purity of more than 99.7%, by (a) reacting phenol with acetone in presence of an acid catalyst, (b) separating a BPA-phenol adduct from the product mixture by crystallisation, filtration and washing, and (c) removing the phenol from the adduct, in which stage (b) involves continuous suspension crystallisation in at least three crystallisers connected in such a way that the mixture is first cooled to 50-70[deg] C in two crystallisers in parallel and then cooled to 40-50[deg] C in a third crystalliser in series with the first two, the total residence time of the mixture over all crystallisers being more than 4 hours.

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